Accession Number : AD0668064

Title :   CERTAIN PECULIARITIES OF MAGNETIC IONISPHERIC DISTURBANCES IN THE TRANSITION ZONE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Glushkova,E. P.

Report Date : 01 SEP 1967

Pagination or Media Count : 25

Abstract : The author discusses in detail peculiarities of magnetoionospheric disturbances in the transition zone; the upper limits in the Eastern Hemisphere are near 62 N and in the Western Hemisphere near 42 N, and the lower limits in the Eastern and Western Hemispheres are 55 N and 35 N, respectively and are located near the auroral zone. Observations covered the period extending mainly over the last months of 1958 and most of 1959 because the most complete data on ionospheric observations made with vertical soundings made available to the author covered this period. The article shows that during severe, very strong magnetic storms, Ds-variations of H and Z components of the geomagnetic field occur in synphases. Phenomena characteristic of the auroral-zone disturbances are observed in the ionosphere. Blackouts are observed only in cases during the positive phase of a storm when a sudden peak in the H component, warns of the approach of the current system to the observation point. Moreover, the negative phase of the storm should be well developed. As the transition zone is located approximately in the latitudes where the outer radiation belt is closest to the earth's surface, it is suggested that there may be connection between certain phenomena observed during magnetoionospheric disturbances and the movement of particles in the outer radiation belt. (Author)

Descriptors :   (*MAGNETIC STORMS, IONOSPHERE), IONOSPHERIC DISTURBANCES, MAGNETIC FIELDS, AURORAE, VAN ALLEN RADIATION BELT, PERIODIC VARIATIONS, BLACKOUT(PROPAGATION), POLAR REGIONS, MEASUREMENT

Subject Categories : Geomagnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE